'1913': Leads A Tour Of The World A Century Ago

When World War I broke out in 1914, it unleashed unimaginable carnage and upheaval. By the time the war ended four years later, nearly 40 million lives had been lost, dynasties had collapsed and the global political order was shaken to its core. But what about the year prior to the war? David Greene talks to Charles Emmerson, author of 1913: In Search Of The World Before The Great War.